Early Philips LEDs still in use outside after 10 years!

Ever since I started collecting, the only LED I have ever wanted to add to my collection was one of these. They were introduced by Philips around 2009 and costed about 50 pounds when new! I don't know why, but I always get a feeling of nostalgia when I see these (but I can't for the life of me remember where they were used) - they are pretty memorable with their strange design (see top right corner for a small internet pic). Seeing as they have been obsolete for ages now, I didn't think anywhere near me used these anymore, so imagine my surprise when I saw these the other day on a walk with a friend! I returned today to study them better and take photos. Google maps views of the area these are in confirmed it was developed in 2010, so these lamps are original to these fittings. The setup consists of 15 bollards with frosted covers, which all have little photocells on them with 1 or 2 dayburning. The light from these appeared quite yellow (were they always like this or has the lumen output depreciated?) One bollard actually had all its screws loose, but much to my disappointment I lifted the top (when there was no-one around) and it turns out the construction of them is such that you need to undo more screws to get to the lamp (which blew my chance of taking a "souvenir"...) Surprisingly 13 of the original 15 lamps have somehow done 10 years of service regardless of ambient temperature or climate! I'd love to see a modern LED top that...